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Background  Individuals with knee and hip osteoarthritis (OA) are less physically active than people in general, and many of these individuals have adopted a sedentary lifestyle. In this study we evaluate the outcome of education and supervised exercise on the level of physical activity in individuals with knee or hip OA. We also evaluate the effect on pain, quality of life and self-efficacy.    Methods  Of the 264 included individuals with knee or hip OA, 195 were allocated to the intervention group. The intervention group received education and supervised exercise that comprised information delivered by a physiotherapist and individually adapted exercises. The reference group consisted of 69 individuals with knee or hip OA awaiting joint replacement and receiving standard care. The primary outcome was physical activity (as measured with an accelerometer). The secondary outcomes were pain (Visual Analog Scale), quality of life (EQ-5D), and self-efficacy (Arthritis Self-Efficacy Scale, pain and other symptoms subscales). Participants in both groups were evaluated at baseline and after 3 months. The intervention group was also evaluated after 12 months.    Results  No differences were found in the number of minutes spent in sedentary or in physical activity between the intervention and reference groups when comparing the baseline and 3 month follow-up. However, there was a significant difference in mean change (mean diff; 95% CI; significance) between the intervention group and reference group favoring the intervention group with regard to pain (13; 7 to 19;  p  < 0.001), quality of life (− 0.17; − 0.24 to − 0.10;  p  < 0.001), self-efficacy/other symptoms (− 5; − 10 to − 0.3;  p  < 0.04), and self-efficacy/pain (− 7; − 13 to − 2;  p  < 0.01). Improvements in pain and quality of life in the intervention group persisted at the 12-month follow-up.    Conclusions  Participation in an education and exercise program following the Swedish BOA program neither decreased the average amount of sedentary time nor increased the level of physical activity. However, participation in such a program resulted in decreased pain, increased quality of life, and increased self-efficacy.    Trial registration  The trial is registered with ClinicalTrials.gov. Registration number:  NCT02022566 . Retrospectively registered 12/18/2013.

bmc musculoskeletal disorders

The effect of education and supervised exercise on physical activity, pain, quality of life and self-efficacy - an intervention study with a reference group